MLB Daily DeltaWeek 27 · September 27, 2026
Aaron Civale
CHC · P
Change to
Portrait of George Kirby
George Kirby
SEA · P
Change to
Who's more valuable, rest of season

Too close to call.

They split your categories 1–1, 2 even. Take whoever fills a bigger need.

Head-to-head
K
ERA
▶
◀
WHIP
W
SV n/a

Aaron Civale wins 1 (WHIP); George Kirby wins 1 (ERA); 2 even; SV n/a.

04

Under the hood

Underlying skill — each value vs league avg
Fastball Velolg 94.0 · higher = better
Aaron Civale
91.5
George Kirby
96.7
Swinging-Strike %lg 11.0% · higher = better
Aaron Civale
9.6%
George Kirby
11.7%
Strikeout %lg 22.0% · higher = better
Aaron Civale
18.5%
George Kirby
20.0%
Chase %lg 28.5% · higher = better
Aaron Civale
31.1%
George Kirby
34.3%
Hard-Hit % Allowedlg 40.0% · lower = better
Aaron Civale
40.2%
George Kirby
40.1%
Barrel % Allowedlg 8.0% · lower = better
Aaron Civale
8.0%
George Kirby
6.6%
xwOBA Allowedlg .315 · lower = better
Aaron Civale
.320
George Kirby
.315
stabilized — trust it · small sample yet · dashed = league avg · right = better
05

The tape

Rest-of-season projection · bold = leads
rest-of-season projection current season projection range
Rate · earned-run quality
ERAlower is better
Aaron Civale
3.554.48
lg xERA 4.10
now 4.20
4.26
George Kirby
3.554.48
lg xERA 4.10
now 3.77
4.17
WHIPlower is better
Aaron Civale
1.121.57
now 1.47
1.37
George Kirby
1.121.57
now 1.22
1.39

Volume · rest of season
Strikeoutshigher is better
Aaron Civale
4082.60
now 39
0
George Kirby
4082.60
now 59
0
Winshigher is better
Aaron Civale
.0007
now 5
0–0
George Kirby
.0007
now 5
0–0

SV — not applicable. Both pitch out of the rotation.

If you already own them — trade angle
Hold · leans sellAaron Civale — hold.conf 0.60
Hold · steadyGeorge Kirby — hold.conf 0.60
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